Internal-combustion engine.



P. RILEY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED OCT. 29. 1909.

Patented July 27, 1915.

2 SHEETSSI-EET I.

P. RILEY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED ocT. 29.1909.

Patented July 27, 1915.-

2 SHEETS-SHEET 2.

pnirnn .srATEs PATENT OFFICE.

rERcY RILEY, or COVENTRY, ENGLAND.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented July 27, 1915.

' Application filed October 29, 1909. Serial N 0. 525,321.

, valves and a piston working directly within them are now on the market and it is found that difficulties occur owing to the heating and expansion of the slide valves and to the thrust of the piston on the inner slide valve.

For in this engine the heat generated by combustion has to pass through three thicknesses of metal and two of oil before reaching the cooling fluid, the slide valves therefore become highly heated while the inner valve owing to its becoming the hottest expands more'than the outer one often causing the slide valves to bind. Moreover as i the piston works in a moving slide valve its thrust tends to force the slide valve in its direction ofmovement which thrust has to be taken by the eccentric shaft. In this engine also lubrication is very difficult especially that of the valve as the flame and the hot gases come in contact with practically all the inner surface of the'slide valve.

According to this invention a fixed cylin-' der inv which the piston works has one or inore cylindrical slide'valves arranged co- 1 axial with and outside it and a second cylinder or casing may be provided outside the slide v valve or valves both cylinders being preferi cylindrical casing for the valve is provided this invention.

ably water jacketed in order that the slide valve may be cooled on both sides.

In the drawings :F igure 1 is a vertical section of a cylinder of an engine having two slide valves constructed according to Fig. 2 is an elevation showing the slide valves and operating mechanism of a. fourcylinder engine.- Fig. 3 is a plan of Fig. 2. Figs. 4 and 5am elevations of the slide valves shown in Fig. 1. Fig. 6 is a vertical section of a cylinder of an en gine having a single slide valve constructed according to this invention. -Fig. 7 is a similar View of a modification in which a top rings of the inner slide which is made integral with the engine cylinder.

Referring to Fig. 1, the cylinder 1 having inlet and outlet ports 2 and 3 has a head 1 and is fixed to the crank case 5 by means of the second cylinder or casing 6. The

casing is formed with inlet and outlet ports 7 and 8 in line with the ports 2 and 3 in the fixed cylinder 1.. The cylindersl and 6 are water jacketed at 9 and 10 respectively. Co-axial with the fixed cylinder 1 and outside it are the two slide valves 11 and 12,

the slide valve 11 having two ports or series of ports 13 and 13 and the slide valve 12 having similarly two ports or series of ports 11, 15 adapted to cover and uncover the inlet ports .2, 7 andoutlet ports 3, 8 at the proper time in the usual manner in this type of engine. It will be seen that the valves 11, 12 work between two water cooled surfaces while the piston 16 is also water cooled, making this system suitablefor engines of large as well as of small'cylinder diameter.

The water jacket 10 may be dispensed with the casing being cooled by air in which case it is preferably provided with radiating V fins. The casing 6 may also be partly cut away for the sake of lightness if desired.

The mechanism for operating the slide valves is as follows :The slide valves 11 and 12 have each two flanges at the bottom, and are cut away as shown. Rocking levers 17, 18, 19, 20,21, 22 pivoted on shafts 23 have pins 24 which engage with the. flanges of the slide valves the other ends of the rocking levers 17, 18, 20, 21, being connected by links 25, 26, 27, 28, terminating in eccentric straps 29, 30, 31, 32 working upon eccentrics 33, 3-1, 35, 36 set at the required angle in relationto one another on the halftime shaft. The rocking levers 17 and 19 are connected together by a link 27 while the rocking levers 20, 22 are similarly connected by the link 38.

It will be seen that each eccentric moves one slide valve of two of the cylinders in opposite directions and therefore in engines having an even number of cylinders the number of eccentrics will be equal to half the number of the slide valves. For in-.

stance the eccentric 34 operates a slide valve of each of the two inner cylinders through the rocking lever 18 and link 26; the eccentric 33 operates a slidevalve of each of the outer cylinders through the rocking levers 17, 19 and links and 37. Similarly the eccentrics 35, 36 each operate two slide valves. V

In Fig. 6 a modification is shown in which a cylindrical slide valve 11 is employed. In this construction the cylinder 1, cylinder head 1. crank casing 5 and water jacket 9 are substantially similar to those shown in Fig. 1. The ports 2". 7*, 3 and 8 are also similar to the ports 2. T, 3. and 8 before described. The admission and exhaust ports 13. l3 are in difierent planes and are suit-- ably arranged to operate in the usual way. Itwill be observed that there is no outer water jacket for the valve but that, the piston 16" operates in a stationary water jacketed cylinder with which the valve 11 is coaxial.

In Fig. T a single cylindrical slide valve 11 is shown and the cylinderl, cylinder head 1. crank casing 5. water space 9, piston 1 6. and the ports 2. 7. 3, 8. 13 and 13 are similar to those shown in Fig. 6, but in this case the cylindrical 'valve' 11 is inclosed in a cylindrical casing 100 which is formed integrally with the cylinder head 4 and also with the upper part of the crank casing 5.

'hat I claim 1s 1. In a four cvcle 1nternal combustion engine 'a fixed cylinder having lateral inlet and exhaust ports, cylindrical port controll ng means of the sleeve valve type rigid against 1nternal pressure. coaxial with and outside the cylinder. and controlling boththe inletand exhaust ports. a. piston in the fixed cylinder. and mechanism wherebythe valve controlling means is moved to close the cylinder ports during the compression and explosion cycles of the engine. I

2. In a four cycle internal combustion engine a fixed cylinder having lateral inletand exhaust ports. cylindrical port-controlling means of the sleeve valve type rigid against internal pressure. coaxial with and outside 'the cylinder and controlling both the inlet and exhaust ports. means for cooling the fixed cylinder within the cylindrical portcontrolling means, a piston in the fixed cylinder and means whereby the port-controlling means is moved to close thecylinder ports duringthe compression and explosion cycles of the engine.

In a four cycle internal combustion engine. a'fixed' cylinder having lateral inlet and exhaustports. cylindrical port-controlling lneans of the sleeve valve type rigid against internal pressure. coaxial with and outside the cylinder and controlling both the inlet and exhaust-ports. a cylindrical casing outside the port-controlling means for cooling the cylindrical casing outside the port-controlling means. a pistonin the fixed cylinder and means. whereby the portcontrolling means is moved to close the cylinder exhaustports, a cylindrical casing outside the port-controlling means. means for cooling the fixed cylinder within the port-controlling means and the cylindrical casing outside said port-controlling means, a piston in the fixed cylinder and means whereby the portcontrolling means is moved to close the cylinder ports during the compression and explosion cycles of the enginel 5.- In an internal combustion engine, a. fixed cylinder ported for admission and exhaust, cylindrical slide valves rigid against internal pressure sliding one within the other coaxial with and outside the cylinder, a piston within the fixed cylinder and means whereby the valves 'are moved to close the cylinder against admission' or exhaust during the compression "and explosion cycles of the engine. a

6. In an internal combustion engine, a fixed cylinder ported for admission and exhaust, cylindrical slide valves rigid against internal pressure sliding one within the other coaxial with and outside the cylinder, means for cooling the fixed cylinder within the cylindrical valves, a piston within the fixed cylinder, and means whereby the valves are moved to close the cylinder against admission or exhaust during the compression V and explosion cycles 'ot the engine.

4. In an 1nternal combustion engine, a.

fixed cyliiider ported for admission and exinternal pressure sliding one within the other coaxial with and outside the cylinder, a cylindrical casing outside the slide valves, means for cooling the fixed cylinder within the cylindrical valves and the cylindrical casing'outside the valves, a piston within the fixed cylinder and means whereby the valves are moved to close the cylinder against admiion or exhaust during the compression and explosion cycles of the engine. a

9. In an internal combustion engine an even number of fixed cylinders, cylindrical slide "alves co-axial with and outside the cylinders, pistons Within the cylinders, rocking levers, means for connecting the rocking' levers to the slide valves, eccentrics and links connecting the eccentrics and rocking levers so that each eccentric moves two slide valves in opposite directions.

10. In an internal combustion engine, an even number of fixed cylinders, cylindrical slide "ZIlX'QS'CO-ZIXlEIl with and outside the cylinders, pistons Within the cylinders, rocking levers, flanges on the slide valves, means for connecting the flanges to the rocking levers, eccentrics and links connecting the eccentrics and rocking levers so that each eccentric moves twoslide valves in opposite directions.

11. In an internal combustion engine, an even number of fixed cylinders, cylindrical slide valves coaXial with and outside the cylinders, pistons within the cylinders, rocking levers, means for connecting the rocking levers and the slide valves, half the number of eccentrics as there are slide valves, and links connecting the eccentrics to the rocking levers.

PERCY RILEY.

lVitnesses ERNEST HARKER, ARTHUR CASPER, Jr. 

